<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div>
    <h1>登陆页面</h1>
    <input type="text"  placeholder="用户名" v-model="user.username">
    <input type="text" placeholder="密码" v-model="user.password">
    <input type="button" value="登录" @click="f()">
</div>
<script src="https://cdn.bootcdn.net/ajax/libs/axios/0.21.1/axios.min.js"></script>
<script src="https://cdn.staticfile.org/vue/2.2.2/vue.min.js"></script>
<script>
    let v = new Vue({
        el: "body>div",
        data: {
            user:{username:"",password:"",nickname:""}
        },
        methods:{
           f(){
               axios.post("/login",v.user).then(function (response){
                   if(response.data==1){
                       alert("登陆成功");
                       location.href='/';
                   }else if(response.data==2){
                       alert("用户名不存在")
                   }else if(response.data==3){
                       alert("密码错误")
                   }
               })
           }
        }
    })
</script>
</body>
</html>